Mechanical warp stop-motion for looms.



No. 702,609; 1 v Patentedjune l7,.l 9 02 I H. WYMA'L IECHANICAL WARP STOP MOTION FOR LOOMS.

A iim'ion filed Dec. 12, 1901.)

(No Model.) 3 Sheep-Sheet 2.

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No. 702,609. Patented lune I7, I902 n, wymn.

IEOHANIGAL'WABP 8T0? MOTION FOR LOOMS.

('Appl icatlon filed Doc. 13, 1901.) v

(No Model.) 3 Sheets-8heet 3.

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UNITED STATES PATENT ()FFICE.

HORACE WYMAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMP- TON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTSA CORPORATION OF MASSACHUSETTS.

MECHANICAL WARP STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 702,609, dated June 17, 1902. Application filed December 12, 1901- Serial No. 85,649. (No model.)

To all, whom it may concern: To one of the arches 10 is bolted a T-shaped Be it known that I, HORACE WYMAN, a citistand 11, to which is secured in this instance 7 zen of the United States, residing at Worcesone end of the two guide-rods 12and 13, over ter, in the county of Worcester and State of which the lappet-threads 6 pass from the lap- Massachusetts, have invented certain new pet-thread beams 14 and 15, in this instance 55 and useful Improvements in Mechanical two in number and mounted in the stand 16, Warp Stop-Motions for Looms, of which the secured to theloom-arch. There are also two following is a specification. supporting-rods 17 and18 between the guide- My invention relates to warp stop-motion rods 12 and 13, which support the lappet- 10 for looms, and particularly to a mechanical threads 6 in a horizontal plane, as shown in 60 warp stop-motion for what are termedtlap- Fig. 3. Itwill be understood that there is a pet-looms, and the object of my invention corresponding T-shaped stand 11 at the opis to provide a'warp stop-motionafor lappetposite end of the loom for supporting the oplooms to be used inconnection with the lapposite ends of the rods12 and 13 and 17 and I5 pet-threads,which extend above the ordinary I18 and also a stand 16 for the two lappet- 65 warp-threads and lead over guide-rods to the thread beams 14 and 15. e I lappet-needles, which motion on the break- A guide-rod 19 is supported at one end in ing of any one of the lappet-threads will op-- the lower end of a bracket 20, secured at its eratethrough coacting mechanism to stop upper end to the upper part of the stand 11,.

20 the loom. and each lappet-thread 6 from the lappet- 70 My invention consists in certain novel feathread beams 14 and 15 passes over the rodtures of construction of my mechanical warp 12 and around the rod 13 and over the sup-v I stop-motion-for the lappet-threads of lappetporting-rods l7 and 18 and over the guidelooms, as will be hereinafter fully described. rod 19 to the tension device. (See Fig. 1.)

15 Referring to the drawings, Figure l is a The tension device in this instance consists 75 right-hand side elevation of a portion of a of two parallel rods 20 20, Fig.: 2, each suploom with my improvements applied thereto. ported in the ends of a centrally-pivoted le- The lay is shown in section. Fig. 2 is a front ver 21, fast on a rock-shaft 22, mounted in view of the parts shown in Fig. .1 looking in the outer end of a stand 23, secured to the the direction of arrow ct, same figure. Fig. 3 loom-arch. 80 shows on an enlarged scale a sectional inside The lappet-threads 6 pass under the upper view of some of the parts shown in the upper rod 20 and overthe lower rod 20 of the tenpart of Fig. 2, with a drop-wire in its normal sion device, and a spring 24, secured at one position; and Fig. 4 corresponds to Fig. l 3, end to the end of the stand 23 and at its other but shows the drop-wire in its lowered posiend to a strap 25, which extends around the 85 tion. shaft 22, acts to keep thetension device in a I In the accompanying drawings, 1 is the positionto putatension on the lappet-threads loom side; 2, the lay-sword; 3, the lay; 4, the in the ordinary way. From the tension de-' needle-bar, carrying a series of needles 5, a vice the lappet-threads 6 pass around the 40 through the lower end of each of which is guide-rod 26 and through the eyes in the 90 threaded a lappet-thread 6 in the ordinary lower end of the needles 5, as shown in Fig. way. 1 1, in the ordinary way. Upon each lappet- 7 is the breast-beam. thread 6, between the supporting-rods 17 and Sis the shipper-lever, which is engaged and 18, is supported a drop-wire 27, which in this moved out of its retaining-notchito ship the instance is, shown of. loop form withan eye 5 belt and stop the loom in the ordinary way. at its upper end to receive the lappet-thread.

All of the above parts may be of the ordi? Extending below the drop-wires 27 are in nary construction. this instance two inclined bars 28 and 29,

I will now describe the parts more particuhaving a space between them and secured at larly connected with my improvements. their ends to the lower end of a swinging arm 1C0 or bracket 30, which is fast at its upper end on a rock-shaft 31, having hearings in the stand 11. A transverse guide bar or rod is secured at each end to the arm or bracket 30, and the drop-wires 27 straddle said guiderod, as shown. The guide-rod 18 is loosely mounted to turn in its bearings, and it has fast thereon at each end the upper ends of two swinging arms 33, to the lower ends of which are secured a transverse feeler-rod 34, extending just below the inclined bars 28 and 29 and adapted to be moved back and forth just below the opening between said bars by the rotation of the rod 17 and the swinging of the arms 33. On the rod 18 is fast the inner end of a lever 35. The outer end of said lever is connected bya connector 36 to a lever 37, pivoted at 38 on a stand 39, secured to the cross-girth 40. (See Fig. 2.) The lever 37 carries a roll 37', adapted to extend into and travel in a groove 41 in the face of the cam 41, fast on the bottom shaft 42. (See Figs. 1 and 2.)

The revolution of the cam 41, through lever 37, connector 36, lever 35, and rod 17, communicates a continuous swinging motion to the arms 33 to carry the feeler-rod 34 back and forth below the inclined bars 28 and 29 as long as the loom runs and the drop-wires 27 remain in their normal position. (Shown in Fig. 3.)

Ihave shown in the drawings one form of mechanism, coacting with the warp stop-motion, above described, to stop the loom on the breaking of a lappet-thread and the dropping of the drop-wire, and I will now describe said mechanism.

On the outer end of the rod 31 is fast a plate 43, having its lower end notched or recessed and provided with inclined surfaces (See Fig. 1.) Into the recessed lower end of the plate 43 extends the upturned end 44 of a lever 44, centrally pivoted at 45. A spring 45 acts to hold the end 44 in the recess in the plate 43. To the outer end of the lever 44 is attached the upper end of a connector 4G. The lower end of the connector 46 is attached to a latch 47, pivoted at 48 on an arm 49, which is pivoted at its lower end at 49 on a stand 50, bolted to the loom side. The latch 47 at its front end is notched to be engaged by the hunter 51 on the lay when said latch is in its raised position. A toe or projection 47 on the latch 47 engages with the rear of the stand 49 and limits the raising of the latch 47, and the front end of the latch 47 engages with the top of the arm 49 and limits the loweringof the latch. To the pivotpin 48 of the latch 47 is attached one end of a rod or connector 53. The other end of said rod is attached to the lower end of a lever 54, pivoted at 55 (see Fig. 1) and having a recess in its upper end to receive the shipperlever 8.

It will be noted that the lappet-threads do not pass through heddles, as do ordinary v' .p and pile warp threads, but are carried to needles usually mounted so as to project in front of the lay-reed, and which needles may be movable with the lay and sometimes movable 7o lengthwise thereof under the call of a pattern to vary the position of the lappet effect. On the other hand, it is necessary that the varieties of movements imparted to the lappetthreads may not be transmitted back to the drop devices and that they be maintained in normal condition. Therefore the guide-bars and tension mechanism hereinbefore described act as a means between the lappetneedles and drop devices to prevent the trans- 8o mission of the said motion of the lappetthreads and the deflection of the threads at the point where the drop devices are located.

The operation of the mechanism shown in the drawings and above described for coacting with the warp stop-motion will be readily understood.

In case of the breaking of a lappet-thread a drop-wire 27 will drop into the position shown in Fig. 4, the guide-rod 32 limiting the downward motion of the drop-wire. In the: swinging motion of the feeler-rod 34 said rod will engage the lower end of the drop-wire 27 and move it into engagement with one or the other of the transverse bars 28 or 29, according to the direction of movement of the rod 34, and the continued movement of the rod 34, through the drop-wire 27, will move the swinging arms 30, fast on the shaft 31, and rock said shaft and move the plate 43 and cause the inclined faces 43 to rock the lever 44 and raise its outer end, and through the connector 46 raisethe latch 47 into a position to be engagtby the hunter 51 on the backward stroke of the lay. The engagement of the hunter 51 with the latch 47 moves back said latch and the stand 49 and the connector 53, and through said connector 53 moves the lever 54 and disengages the shipperlever 8 to stop the loom in the ordinary way.

In addition to the mechanism for stopping the loom in the case of the breaking of a lappetthread above described any ordinary warp-stop-motion mechanism may also be used on the loom to stop the loom in case of I15 the breaking of a warp-thread. I

It will be understood that the details of construction of my improvements may be varied, if desired, and any suitable form of mechanism for coacting with the Warp stop- I20 motion to stop the loom may be used in lieu of that shown and described, and one of the transverse bars 28 and 29 may be omitted.

Having thus described my invention, what I claim as new, and desire to secure by Letters I 25 Patent, is-

1. In a lappet-loom, the combination of a lappet-thread-supporting beam and lappetneedles, a series of drop devices supported by the lappet-threads between the lappet beam 130 and needles, means interposed between the drop devices and lappet-needles for maintaining a normal condition and preventing deflection of the lappet-threads as they pass through and needles, guiding means and tension devices for the lappet-threads interposed between the drop devices and lappet-needles for maintaininga normal condition of the lappet-threads as theypass through the drop devices and means operative on the dropping of a drop device to stop the loom.

3. In a lappet-loom, the combination of a lappet-thread-supporting beam and lappetneedles, a series of drop devices supported by the lappet-threads between the lappet beam and needles, guide-rods and tension devices for the lappet-threads interposed between the drop devices and lappet-needles for maintaining a normal condition of the lappet-threads as they pass through the drop devices, said drop devices, guide-rods and tension devices being disposed above the plane of the warpthreads and mechanical devices operative on the dropping of a drop device to stop th loom.

4. In a lappet-loom, the combination of a lappet-thread beam and lappet-needles, drop devices normally supported by the lappetthreads between the beam and lappet-needles, means disposed between the lappet-needles and drop devices for maintaining a normal condition of the lappet-threads as they pass through the drop devices, a guide-bar for the dropdevices and a mechanical stop-motion comprisinga transverse bar extending below the drop devices, a movable feeler rod orbar extending below said transverse bar and coac-tin g mechanism intermediate said bar and the shipper-lever to move the shipper-lever and stop the loom on the dropping of a drop device.

5. In a lappet-loom, the combinationwith the lappet-beam and lappet-needles, supporting-rods for the lappet-threads disposed be;

tween the lappet-beam and lappet-needles, a seriesof drop Wires or bars hung upon the lappet-threads between said supportingrods and extendingin a plane above the ordinary warp threads, a guide rodor bar for the drop wires or bars, anda mechanical stop-motion comprising two transverse inclined bars having a space between them and disposed between the lappet-beam and lappet-needles, a movable feeler rod or bar extending below the said inclined bars and coacting mechanism to move the shipper-lever and stop the loom on the breaking of a lappet-thread.

HORACE WYMAN.

Witnesses:

JOHN C. DEWEY, M. HAAS. 

